Crane hydraulic clamp control system and control method

Abstract

The invention provides a crane hydraulic clamp control system and method, the crane hydraulic clamp control system comprises a clamp body, the clamp body comprises a first clamp arm, a second clamp arm and a driving mechanism, and the driving mechanism is connected with the first clamp arm and the second clamp arm; a first trigger plate is arranged on the inner side of the first clamp arm, a first proximity switch is arranged in the first clamp arm, and the first trigger plate can trigger the first proximity switch to send out a first clamping signal; a second trigger plate is arranged on the inner side of the second clamp arm, a second proximity switch is arranged in the second clamp arm, and the second trigger plate can trigger the second proximity switch to send out a second clamping signal; the clamp further comprises a control unit, the driving mechanism, the first proximity switch and the second proximity switch are all electrically connected with the control unit, and when the control unit receives a first clamping signal and a second clamping signal, the control unit can control the driving mechanism to stop driving the first clamp arm and the second clamp arm to get close to each other in time. The control unit controls the driving mechanism to drive the first clamp arm and the second clamp arm to be away from each other by a set distance. The problem that in the prior art, a traveling hydraulic clamp easily causes edge damage to a steel coil is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of crane equipment, and in particular to a crane hydraulic clamp control system and a control method. Background Art

[0002] As an important part of the crane, the failure of hydraulic clamps will not only affect the operating efficiency and production rhythm, but also may cause many uncertain quality accidents. In recent years, with the rapid development of steel enterprises, the use of hydraulic clamps on cranes has become more and more widespread, but it has also brought more problems. Since the operator cannot accurately judge the action of the clamp, when the clamp is clamped, the oil pump cannot control its pressure value, which is easy to cause damage to the edge of the steel coil and affect the product quality. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a crane hydraulic clamp control system and control method for solving the problem that the crane hydraulic clamp in the prior art easily causes edge damage to the steel coil.

[0004] To achieve the above-mentioned purpose and other related purposes, one aspect of the present invention provides a crane hydraulic clamp control system, including a clamp body, the clamp body including a first clamp arm, a second clamp arm and a driving mechanism, the driving mechanism is transmission-connected with the first clamp arm and the second clamp arm, and the driving mechanism can drive the first clamp arm and the second clamp arm to move closer to and away from each other; a first trigger plate is provided on the inner side of the first clamp arm, the first trigger plate can be compressed into the first clamp arm, a first proximity switch is provided inside the first clamp arm, a set distance is provided between the first proximity switch and the first trigger plate, when the first trigger plate is compressed into the first clamp arm by a steel coil, the first trigger plate can trigger the first proximity switch to send a first clamping signal; a second trigger plate is provided on the inner side of the second clamp arm , the second trigger plate can be compressed into the second clamp arm, a second proximity switch is provided inside the second clamp arm, and a set distance is provided between the second proximity switch and the second trigger plate; when the second trigger plate is compressed into the second clamp arm by the steel coil, the second trigger plate can trigger the second proximity switch to send a second clamping signal; and also includes a control unit, the driving mechanism, the first proximity switch and the second proximity switch are all electrically connected to the control unit, when the control unit receives the first clamping signal and the second clamping signal, the control unit can timely control the driving mechanism to stop driving the first clamp arm and the second clamp arm to approach each other, and the control unit controls the driving mechanism to drive the first clamp arm and the second clamp arm to move away from each other by a set distance.

[0005] Further, a first clamping foot extending towards the second clamping arm is provided at the bottom of the first clamping arm, and a second clamping foot extending towards the first clamping arm is provided at the bottom of the second clamping arm. Among them, a first touch sensor is provided on the first clamping foot, a second touch sensor is provided on the second clamping foot, and both the first touch sensor and the second touch sensor are electrically connected to the control unit; the control unit is electrically connected to the traveling crane control system.

[0006] Further, a first travel switch is provided on the first clamping arm, and a second travel switch is provided on the second clamping arm. Both the first travel switch and the second travel switch are electrically connected to the control unit. When the first clamping arm is opened in place, the first travel switch will send a first in-place signal, and when the second clamping arm is opened in place, the second travel switch will send a second in-place signal.

[0007] Further, a status indicator light is provided on the clamp body, and the status indicator light is electrically connected to the control unit.

[0008] Further, the control unit is a PLC.

[0009] Further, the drive mechanism includes a hydraulic pump and a motor for driving the hydraulic pump, and the motor is electrically connected to the control unit.

[0010] On the other hand, the present invention provides a control method for a traveling crane hydraulic clamp control system based on the above-mentioned one. The traveling crane hydraulic clamp control method includes the following steps:

[0011] The control unit acquires a first clamping signal and a second clamping signal;

[0012] When the control unit receives the first clamping signal and the second clamping signal, the control unit controls the drive mechanism to stop driving the first clamping arm and the second clamping arm to approach each other, and the control unit drives the first clamping arm and the second clamping arm to move away from each other by a set distance.

[0013] As described above, the traveling crane hydraulic clamp control system and control method of the present invention have the following beneficial effects: As described above, the traveling crane hydraulic clamp control system and control method based on the present invention can prevent the hydraulic clamp from clamping the steel coil too tightly during the lifting of the steel coil, and ensure that the clamp applies an appropriate clamping force to the steel coil during operation, thereby effectively reducing the edge damage rate caused by the hydraulic clamp to the steel coil and improving the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It shows a front view of the traveling crane hydraulic clamp control system provided by the present invention.

[0015] Figure 2 Shown is the rear view of the vehicle hydraulic clamp control system provided by the present invention.

[0016] Description of the reference numerals in the drawings

[0017] 10 Clamp body

[0018] 11 First clamp arm

[0019] 111 First trigger plate

[0020] 112 First proximity switch

[0021] 113 First clamp foot

[0022] 1130 First touch sensor

[0023] 114 First travel switch

[0024] 12 Second clamp arm

[0025] 121 Second trigger plate

[0026] 122 Second proximity switch

[0027] 123 Second clamp foot

[0028] 124 Second travel switch

[0029] 20 Control unit

[0030] 101 Status indicator Detailed implementation manners

[0031] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0032] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or connected through an intermediate medium. It can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present invention is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] Please refer to Figures 1 to 2 . It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The types, quantities, and proportions of the components in actual implementation can be arbitrarily changed, and the layout type of the components may also be more complex.

[0035] One aspect of the present invention provides a vehicle hydraulic caliper control system, as Figure 1 and Figure 2As shown, the crane hydraulic clamp control system includes a clamp body 10, and the clamp body 10 includes a first clamp arm 11, a second clamp arm 12 and a driving mechanism 13. The driving mechanism 13 is transmission-connected with the first clamp arm 11 and the second clamp arm 12, and the driving mechanism 13 can drive the first clamp arm 11 and the second clamp arm 12 to move closer to and away from each other; specifically, a first trigger plate 111 is provided on the inner side of the first clamp arm 11, and the first trigger plate 111 can be compressed into the first clamp arm 11, and a first proximity switch 112 is provided inside the first clamp arm 11, and a set distance is provided between the first proximity switch 112 and the first trigger plate 111. When the first trigger plate 111 is compressed into the first clamp arm 11 by the steel coil, the first trigger plate 111 can trigger the first proximity switch 12 to send a first clamping signal; a second trigger plate 111 is provided on the inner side of the second clamp arm 12 121, the second trigger plate 121 can be compressed into the second clamp arm 12, and a second proximity switch 122 is provided inside the second clamp arm 12. There is a set distance between the second proximity switch 122 and the second trigger plate 121. When the second trigger plate 121 is compressed into the second clamp arm 12 by the steel coil, the second trigger plate 121 can trigger the second proximity switch 122 to send a second clamping signal. It also includes a control unit 20, and the driving mechanism 13, the first proximity switch 112 and the second proximity switch 122 are all electrically connected to the control unit 20. When the control unit 20 receives the first clamping signal and the second clamping signal, the control unit 20 can promptly control the driving mechanism 13 to stop driving the first clamp arm 11 and the second clamp arm 12 to approach each other, and the control unit 20 drives the first clamp arm 11 and the second clamp arm 12 to move away from each other by a set distance.

[0036] The beneficial effects of the traveling hydraulic clamp control system of the present invention are as follows: When clamping and lifting a steel coil, the first clamping arm 11 and the second clamping arm 12 are driven by the driving mechanism 13 to approach each other to clamp the steel coil. When the first trigger plate 111 on the inner side of the first clamping arm 11 (the side close to the second clamping arm 12) is compressed into the first clamping arm 11 by the left edge of the steel coil, and the second trigger plate 121 on the inner side of the second clamping arm 12 (the side close to the first clamping arm 11) is compressed into the second clamping arm 12 by the right edge of the steel coil, the first trigger plate 111 and the second trigger plate 121 respectively trigger the first proximity switch 112 and the second proximity switch 122 to emit the first clamping signal and the second clamping signal respectively, indicating that the clamp is closed in place and the steel coil is already clamped. When the control unit 20 receives the first clamping signal and the second clamping signal, it immediately controls the first clamping arm 11 and the second clamping arm 12 to stop the clamping action, that is, controls the driving mechanism 13 to stop driving the first clamping arm 11 and the second clamping arm 12 to approach each other. Then, the control unit 20 controls the driving mechanism 13 to drive the first clamping arm 11 and the second clamping arm 12 to move back a set distance, that is, drive the first clamping arm 11 and the second clamping arm 12 to move away from each other by a set distance. Thereby, it can prevent the hydraulic clamp from clamping the steel coil too tightly during the lifting process of the steel coil, and ensure that the clamp applies an appropriate clamping force to the steel coil during the operation process, and further can effectively reduce the edge damage rate caused by the hydraulic clamp to the steel coil, and improve the product quality.

[0037] Further, in order to improve the safety when lifting the steel coil and prevent the first clamping foot 113 on the first clamping arm 11 on the left side and the second clamping foot 123 on the second clamping arm 12 on the right side from not clamping in place, thereby tipping over the steel coil, preferably, as Figure 1 shown, in this embodiment, a first clamping foot 113 extending in the direction close to the second clamping arm 12 is provided at the bottom of the first clamping arm 11, and a second clamping foot 123 extending in the direction close to the first clamping arm 11 is provided at the bottom of the second clamping arm 12. Among them, a first touch sensor 1130 is provided on the first clamping foot 113, and a second touch sensor (not shown in the figure) is provided on the second clamping foot 123. The first touch sensor 1130 and the second touch sensor are both electrically connected to the control unit 20, and the control unit 20 is electrically connected to the traveling crane control system. With such a setting, when lifting the steel coil, if the first proximity switch 112 on the first clamping arm 11 and / or the second proximity switch 122 on the second clamping arm 12 is not triggered, and the first touch sensor 1130 on the first clamping foot 113 and / or the second touch sensor on the second clamping foot 123 is triggered in advance, that is, triggered earlier than the first proximity switch 112 and / or the second proximity switch 122, at this time the control unit 20 will determine that there is an abnormality in the clamping of the steel coil by the clamp, that is, the clamping force on the steel coil may be insufficient. At this time, the control unit 20 will send a signal to the traveling crane control system in time to control the traveling crane to stop lifting in time, thereby preventing a safety accident.

[0038] Further, as Figure 1 and Figure 2 shown, in this embodiment, a first travel switch 114 is provided on the first jaw arm 11, and a second travel switch 124 is provided on the second jaw arm 12. The first travel switch 114 and the second travel switch 124 are both electrically connected to the control unit 20. When the first jaw arm 11 is opened in place, the first travel switch 114 will send a first in-place signal. When the second jaw arm 12 is opened in place, the second travel switch 124 will send a second in-place signal. With such a setting, it can enable the operator to better judge and master the state of the clamp, ensuring the safety of the clamp operation.

[0039] Further, in order to enable the operator to better and intuitively observe the working state of the hydraulic clamp and ensure the accuracy of the operator's operation of the hydraulic clamp, preferably, as Figure 1 shown, in this embodiment, a status indicator light 101 is provided on the clamp body 10. The status indicator light 101 is electrically connected to the control unit 20. With such a setting, when the control unit 20 receives the first in-place signal of the first jaw arm and the second in-place signal of the second jaw arm sent by the first travel switch 114 and the second travel switch 124, the control unit 20 will control the status indicator light 101 to emit a first light signal, so that the operator can intuitively determine that the hydraulic clamp is in the opened-in-place state; when the control unit 20 receives the first clamping signal and the second clamping signal sent by the first proximity switch 112 and the second receiving switch 122, the control unit 20 will control the status indicator light to emit a second light signal; and when the first jaw arm 11 and the second jaw arm 12 of the hydraulic clamp are being opened, if the first travel switch 114 and / or the second travel switch 124 is not triggered, the control unit 20 will control the status indicator light to emit a light alarm signal (such as the light flashing continuously). Similarly, when the first jaw arm 11 and the second jaw arm 12 of the hydraulic clamp are clamping the steel coil, if the first proximity switch 112 and the second proximity switch 122 are not triggered, the control unit 20 will also control the status indicator light to emit a light alarm signal. Specifically, in this embodiment, the status indicator light 101 is a three-color light, so that the control unit 20 can control the three-color light to emit different colors of light according to the different signals received. Specifically, in this embodiment, the control unit 20 is a PLC.

[0040] Specifically, in this embodiment, the driving mechanism 13 includes a hydraulic pump and a motor for driving the hydraulic pump, and the motor is electrically connected to the control unit 20. The structure is simple and the cost is low. Specifically, during operation, the control unit 20 can monitor the current information of the motor driving the hydraulic pump in real time. If the current information of the motor monitored in real time is inconsistent with the set value, the control unit 20 can determine that the operating current of the motor is abnormal, and then the control unit 20 can timely control the status indicator to emit a light alarm signal, thereby further ensuring safe operation.

[0041] Another aspect of the present invention further provides a control method based on the above-mentioned traveling hydraulic clamp control system. The traveling hydraulic clamp control method includes the following steps:

[0042] S1: The control unit obtains a first clamping signal and a second clamping signal;

[0043] S2: When the control unit receives the first clamping signal and the second clamping signal, the control unit controls the driving mechanism to stop driving the first clamp arm and the second clamp arm to approach each other, and the control unit drives the first clamp arm and the second clamp arm to move away from each other by a set distance.

[0044] The beneficial effects of the traveling hydraulic clamp control method are the same as those of the above-mentioned traveling hydraulic clamp control system, so they will not be elaborated here.

[0045] In summary, the traveling hydraulic clamp control system of the present invention can ensure that the clamp applies an appropriate clamping force to the steel coil during operation, thereby effectively reducing the edge damage rate caused by the hydraulic clamp to the steel coil, improving the product quality, and real-time displaying the working state of the fixture through the status indicator. The operator can intuitively monitor the equipment to ensure accurate operation and achieve efficient and safe operation. Therefore, the present invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0046] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A hydraulic clamp control system for a crane, comprising a clamp body, wherein the clamp body comprises a first clamp arm, a second clamp arm and a driving mechanism, wherein the driving mechanism is in transmission connection with the first clamp arm and the second clamp arm, and the driving mechanism can drive the first clamp arm and the second clamp arm to move closer to and away from each other; characterized in that: A first trigger plate is provided on the inner side of the first clamping arm. The first trigger plate can be compressed into the first clamping arm. A first proximity switch is provided inside the first clamping arm. There is a set distance between the first proximity switch and the first trigger plate. When the first trigger plate is compressed into the first clamping arm by the steel coil, the first trigger plate can trigger the first proximity switch to send out a first clamping signal; A second trigger plate is provided on the inner side of the second clamping arm. The second trigger plate can be compressed into the second clamping arm. A second proximity switch is provided inside the second clamping arm. There is a set distance between the second proximity switch and the second trigger plate; When the second trigger plate is compressed into the second clamping arm by the steel coil, the second trigger plate can trigger the second proximity switch to send out a second clamping signal; It further includes a control unit. The driving mechanism, the first proximity switch, and the second proximity switch are all electrically connected to the control unit. When the control unit receives the first clamping signal and the second clamping signal, the control unit can timely control the driving mechanism to stop driving the first clamping arm and the second clamping arm to approach each other, and the control unit controls the driving mechanism to drive the first clamping arm and the second clamping arm to move away from each other by a set distance.

2. The control system of a traveling hydraulic clamp according to claim 1, characterized in that, A first clamping foot extending towards the second clamping arm is provided at the bottom of the first clamping arm. A second clamping foot extending towards the first clamping arm is provided at the bottom of the second clamping arm. Among them, a first touch sensor is provided on the first clamping foot, a second touch sensor is provided on the second clamping foot, and both the first touch sensor and the second touch sensor are electrically connected to the control unit; The control unit is electrically connected to the traveling crane control system.

3. The control system of a traveling hydraulic clamp according to claim 1, characterized in that, A first travel switch is provided on the first clamping arm, and a second travel switch is provided on the second clamping arm. Both the first travel switch and the second travel switch are electrically connected to the control unit. When the first clamping arm is opened in place, the first travel switch will send out a first in-place signal. When the second clamping arm is opened in place, the second travel switch will send out a second in-place signal.

4. A vehicle hydraulic caliper control system according to any one of claims 1 to 3, characterized in that, A status indicator light is provided on the clamp body, and the status indicator light is electrically connected to the control unit.

5. The control system of a traveling hydraulic clamp according to claim 1, characterized in that The control unit is a PLC.

6. The control system of a traveling hydraulic clamp according to claim 1, characterized in that, The driving mechanism includes a hydraulic pump and a motor for driving the hydraulic pump. The motor is electrically connected to the control unit.

7. A control method based on the control system of a vehicle hydraulic clamp as described in any one of claims 1 to 6, characterized in that, The control method for the traveling crane hydraulic clamp includes the following steps: The control unit obtains the first clamping signal and the second clamping signal; When the control unit receives the first clamping signal and the second clamping signal, the control unit controls the driving mechanism to stop driving the first clamping arm and the second clamping arm to approach each other, and the control unit drives the first clamping arm and the second clamping arm to move away from each other by a set distance.

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